EP 0329907 A1 19890830 - Method and apparatus for molding composite metal-elastomer wheels.
Title (en)
Method and apparatus for molding composite metal-elastomer wheels.
Title (de)
Verfahren und Vorrichtung zum Formen von Rädern aus Metall-Elastomer-Verbundwerkstoff.
Title (fr)
Procédé et appareil pour le moulage de roues en matière composite métal-élastomère.
Publication
Application
Priority
EP 88400447 A 19880226
Abstract (en)
An apparatus for moulding a urethane overlay (26) on a metal wheel disc (24) includes a base mold part (202), a middle mold part (22, 24) and a clamp (206). The clamp (206) includes a funnel (312) adapted for introducing a liquid urethane reaction mixture. The funnel (312) has a nozzle passage (322) registering with a pour opening (290) in the disc (24) in the closed condition of the mold. A sprue pin (330) is affixed to the base mold part (202) and cooperates with the margin of the pour opening (290) to define a restricted access opening to the mold cavity during the injection pour of the reaction mixture. The sprue pin (330) is operable to restrict back-flow of the reaction material during gelation of the same in the cure cycle. The sprue pin (330) and disc (24) in the vicinity of the pour opening (290) define a zone of weakness in the cured urethane reaction mixture operable to induce fracture in the zone upon separation of the base mold part (202) to thereby cause cleavage of the urethane reaction material adjacent the inboard surface of the middle mold part (22, 24).
IPC 1-7
IPC 8 full level
B29C 67/24 (2006.01); B29C 70/74 (2006.01); B29D 99/00 (2010.01); B29C 37/02 (2006.01)
CPC (source: EP)
B29C 67/246 (2013.01); B29C 70/74 (2013.01); B29D 99/0032 (2013.01); B29C 37/02 (2013.01); B29L 2031/32 (2013.01)
Citation (search report)
- [YD] FR 2156355 A2 19730525 - MOTOR WHEEL CORP
- [Y] FR 2600938 A1 19880108 - NACRYL SA [FR]
- [Y] EP 0000886 A1 19790307 - BAYER AG [DE]
- [A] EP 0219434 A2 19870422 - MOTOR WHEEL CORP [US]
- [Y] PATENT ABSTRACTS OF JAPAN, vol. 7, no. 250 (M-254)[1395], 8th November 1983; & JP-A-58 134 724 (SONY K.K.) 11-08-1983
- [A] PATENT ABSTRACTS OF JAPAN, vol. 8, no. 158 (M-311)[1595], 21st July 1984; & JP-A-59 54 539 (ASAHI GLASS K.K.) 29-03-1984
- [A] PATENT ABSTRACTS OF JAPAN, vol. 7, no. 163 (M-229)[1308], 16th July 1983; & JP-A-58 69 029 (SONY K.K.) 25-04-1983
- [A] PATENT ABSTRACTS OF JAPAN, vol. 10, no. 346 (M-537)[2402], 21st November 1986; & JP-A-61 146 516 (SHIN ETSU POLYMER CO. LTD) 04-07-1986
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 88400447 A 19880226